JAVA GUID

import java.util.UUID;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors; 

public class TestUUID implements Runnable {
        public static void main(String[] args) {
                ExecutorService pool = Executors.newFixedThreadPool(5);
                for (int i = 0; i < 80; i++) {
                        pool.execute(new TestUUID());
                }
                pool.shutdown();
        } 

        public static String genReqID() {
                return UUID.randomUUID().toString().replace("-", "").toUpperCase();
        } 

        public void run() {
                for (int i = 0; i < 10; i++) {
                        System.out.println(genReqID());
                }
        }
}